Cell DifferentiationB-LymphocytesB-Lymphocyte SubsetsReceptors, Antigen, B-CellCells, CulturedMice, Inbred C57BLLymphocyte ActivationImmunoglobulin DImmunoglobulin MCell LineMice, Inbred BALB CSpleenSignal TransductionImmunoglobulin mu-ChainsGerminal CenterPlasma CellsTranscription FactorsMice, KnockoutGene Expression RegulationMolecular Sequence DataMice, TransgenicGene Rearrangement, B-Lymphocyte, Light ChainFlow CytometryCell DivisionRNA, MessengerImmunoglobulin Heavy ChainsImmunoglobulinsAntibodies, Anti-IdiotypicImmunoglobulin Class SwitchingAntigens, CD40Base SequenceStem CellsCell LineageImmunoglobulin delta-ChainsAntigens, T-IndependentGene Expression Regulation, DevelopmentalPrecursor Cells, B-LymphoidAntigens, Differentiation, B-LymphocyteInterleukin-4Cell ProliferationDNA-Binding ProteinsImmunoglobulin GT-LymphocytesEmbryonic Stem CellsTumor Cells, CulturedGenes, ImmunoglobulinB-Cell-Specific Activator ProteinTranscription, GeneticMice, Inbred StrainsBone Marrow CellsLymphoma, B-CellLipopolysaccharidesReverse Transcriptase Polymerase Chain ReactionAntibodies, MonoclonalAntigens, CDImmunoglobulin kappa-ChainsHematopoietic Stem CellsGene ExpressionPokeweed MitogensPhenotypeAmino Acid SequenceMembrane GlycoproteinsImmunoglobulin J-ChainsTretinoinAntibody FormationApoptosisSex DifferentiationTransfectionTrans-ActivatorsLymphocyte CooperationLymphomaAntigens, SurfaceUp-RegulationProto-Oncogene ProteinsGene Rearrangement, B-LymphocyteRepressor ProteinsPromoter Regions, GeneticDown-RegulationCD40 LigandHomeodomain ProteinsImmunologic MemoryAntigens, CD19Palatine TonsilAntigens, DifferentiationMice, Inbred C3HPre-B Cell ReceptorsImmunohistochemistryCell SurvivalMice, Inbred CBAAntibody-Producing CellsMice, Mutant StrainsLeukemia Virus, MurineMutationInhibitor of Differentiation Protein 2Cell SeparationAntigens, CD79B-Cell Activating FactorTime FactorsHistocompatibility Antigens Class IIInterleukins